Re: f45ec5ff16 ("userfaultfd: wp: support swap and page migration"): [ 140.777858] BUG: Bad rss-counter state mm:b278fc66 type:MM_ANONPAGES val:1

[Matthew Wilcox]

On Fri, Apr 10, 2020 at 11:32:34AM -0400, Peter Xu wrote:
> I'm still trying to digest on what's happened... It would be good too
> if more information on the test could be given, e.g., what is the
> behavior of trinity-c2. A reproducer is of course even better.

Trinity is a syscall fuzzer.  Don't expect what it's doing to make any
sense, it's just executing syscalls at random.